Replication Materials for:
“An econometric evaluation of the effectiveness of in-work support for earnings progression”

Authors:
Cyriac Kodath (University of Sheffield)
Bert Van Landeghem (University of Sheffield)
Angelo Valerio (Department for Work & Pensions)
Peter W. Wright (University of Sheffield) – Corresponding Author (p.wright@sheffield.ac.uk)

Date: 31 October 2025
Manuscript ID: OBES-23-337.R1
Submitted to: Oxford Bulletin of Economics and Statistics

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1. Overview
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This repository contains the replication materials for the manuscript
“An econometric evaluation of the effectiveness of in-work support for
earnings progression.”

The purpose of this package is to provide open access to the Stata code
used in the analysis, in line with the reproducibility requirements of the
Oxford Bulletin of Economics and Statistics (OBES).

The underlying administrative dataset is held securely by the UK
Department for Work and Pensions (DWP) and cannot be shared publicly due
to legal and confidentiality restrictions. As a result, the code included
here cannot be executed outside the DWP secure research environment.

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2. Contents of this Repository
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This public replication package includes:

1. IWP_OBES_Paper.do  
   - The Stata do-file containing all analysis code used in the paper.

2. IWP_OBES_Results.txt  
   - The Stata log file showing the output produced when running the code
     inside the secure DWP environment.

3. README.txt (this file)  
   - Documentation describing the replication materials and data access
     arrangements.

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3. Software Requirements
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- Stata 16 or later  
- No additional user-written ado files were required.

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4. Data Availability and Access
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The dataset used for this analysis consists of restricted-access DWP
administrative microdata. These data are not routinely available to
external researchers.

The final dataset, code, and output used for the analysis are stored
securely within the DWP internal research environment at:

G:\secure\****\****\****\****\analysis\cyriackodath\OBES_Paper\    (Partially Redacted)
    IWP_Dataset.dta
    IWP_OBES_Paper.do
    IWP_OBES_Results.txt

External researchers wishing to explore whether access may be possible
should contact:

Evidence and Strategy Team: evidence.strategyteam@dwp.gov.uk  
or  
Angelo Valerio (Principal Operational Researcher): angelo.valerio@dwp.gov.uk

All requests are considered on a case-by-case basis, and no guarantee of
access can be provided.

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5. Replication Notes
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- The do-file included here is identical to the version used to produce
  all empirical results in the secure DWP research environment.

- Because the underlying dataset is restricted and cannot be shared, the
  code cannot be executed outside the DWP environment.

- Replication is possible only for researchers who receive authorised access
  to the relevant DWP administrative data.

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End of README
